Two basic types of decision alternatives are used to close the gap between supply and demand in operations management: Su options and DEMAND options. Which of the following are appropriate SUPPLY options for an organization that faces higher the expected demands? I $1.$ discounting product prices in off$-$peak periods $2.$ introduction of complementary products $3.$ adjust workforce levels by hiring more employees $4.$ used subcontractors to provide extra capacity temporarily A all of them B $1$ and $3$ only C $1$ and $2$ only D $3$ and $4$ only E $2$ and $4$ only